Wire catalogue / UL Teflon (Fluoropolymer) Wire
UL1637 PTFE Insulated Shielded Low-Voltage Wire
UL1637 hook-up wire, 30–34 AWG. O.D. 1–1.4 mm, stranded. UL E170689 cited. Quote on request.
UL · E170689 is cited for this line. Request the issued document before relying on it for a finished-product approval.
Request certificate or datasheet →UL1637 is a Fluoropolymer-insulated hook-up wire manufactured by Xinya Electronic Co., Ltd. The catalogue describes it as a shielded construction. It is supplied in 3 recorded constructions spanning 30–34 AWG, with an overall diameter of 1–1.4 mm, cut to the length you order.
UL1637 at a glance
- 30–34 AWG, across 3 listed constructions
- Stranded conductor throughout the documented range
- Insulation wall 0.075–0.1 mm
- Overall diameter 1–1.4 mm
How UL1637 compares with its nearest alternatives
UL1637 and UL1332 share the Fluoropolymer insulation. Overall diameter runs 1–1.4 mm for UL1637 against 0.96–3.04 mm for UL1332. UL1637 is the tighter of the two where harness space is limited. Insulation wall is 0.075–0.1 mm against 0.33 mm. Size coverage is 30–34 AWG against 12–30 AWG.
UL1637 and UL1745 share the Fluoropolymer insulation. Overall diameter runs 1–1.4 mm for UL1637 against 0.81–1.37 mm for UL1745. UL1745 is the tighter of the two, so UL1637 is the option to take only when the larger diameter is acceptable. Insulation wall is 0.075–0.1 mm against 0.125–0.29 mm. Size coverage is 30–34 AWG against 30–36 AWG.
Conductor construction and selection
Every construction listed for UL1637 is a stranded conductor, which suits harnesses and assemblies that are flexed or routed around a bend. The resistance column gives the maximum permitted value for the conductor at 20 °C DC.
How to read the UL1637 table
“Insulation O.D. (mm)” is measured over the insulation, not over a jacket, tape or braid. “Jacket O.D. (mm)” is the finished cable diameter, which is the value to quote for gland, grommet and connector sizing.
Questions buyers ask about UL1637
Which sizes of UL1637 are available?
30–34 AWG, across the 3 constructions in the table below. Sizes outside the table can be quoted on request.
Is UL1637 a stranded conductor?
Every construction documented for this line is stranded. Confirm the strand count you need — the “n/mm” figure in the table — because resistance and flexibility both depend on it, and two rows at the same size can differ.
What overall diameter does UL1637 run to?
The documented range is 1–1.4 mm. Quote the size, not the style alone, when the diameter has to fit a specific gland, grommet or channel.
Detailed specification table
Manufacturer construction data for UL1637. Values are transcribed from the source specification sheet. Confirm the final construction and order requirements during quotation.
Scroll horizontally to view all specifications
| AWG | Construction | Conductor diameter (mm) | Insulation thickness (mm) | Insulation O.D. (mm) | Spiral construction (No./mm) | Jacket thickness (mm) | Jacket O.D. (mm) | Characteristic impedance (Ω) |
|---|---|---|---|---|---|---|---|---|
| 34 | 7/0.064 | 0.19 | 0.075 | 0.34 | 31/0.032 | 0.30 | 1.00 | 75 |
| 32 | 7/0.08 | 0.24 | 0.10 | 0.44 | 16/3 | 0.30 | 1.30 | 75 |
| 30 | 7/0.10 | 0.30 | 0.10 | 0.50 | 16/6 | 0.30 | 1.40 | 75 |
Source specification sheet: 1637.
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